Motor for regulators



R. J. SEATOR.

MOTOR FOR REGULATORS.

' I APPLICATION FILED APR. 25. 1918. 1,329,553. Patented; Feb. 3,1920.

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MOTOR FORREGULATQRS. APPLICATYONAFILED APR. 25. 191B.

Patented Feb. 3,1920. 3 $HEETbSHEET 2 Patented Feb. 3,1920.

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APPLICATI ON FILED APR-25.1918.

ROBERT J. SEATOR, 0F BATTLE GREEK,

MICHIGAN, ASSIGNOB OF ONE-HALF TO HERBERT IVIATTI-IE1NS, 0 F BATTLECREEK, MICHIGAN.

MOTOR F63 REGULATORS.

Application filed A use,

To all whom it may concern:

Be it known that I, ROBERT J. SEATOR, a citizen of the United States,residing at Battle Creek, county of Calhoun, State of Michigan, haveinvented certain new and useful Improvements in Motors for Regulators,of which the following is a specification.

This invention relates to improvements in motors for regulators.

My improved motor is especially designed by me for use in regulatingfurnaces and I have shown the same in an embodiment intended for thatpurpose. My improvements, however, are desirable for other uses and maybe readily embodied in structures designed for other uses.

The main objects of this invention are:

First, to provide an improved motor actuated by weight and hydraulicpower.

Second, to provide an improved motor which is very positive in itsaction and not likely to get out of repair.

Third, to provide an improved motor in which the electric current is cutoff in the event of the regulator becoming inoperative through failureof the hydraulic pressure.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of this invention by the devices and meansdescribedin the following specification. The invention is clearlydefined and pointed out in the claims. r

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, inwvhich:

Figure I is a diagrammatic view of a structure embodying the features ofmy invention illustrated in operative relation to a furnace, the partsbeing shown mainly in conventional form.

Fig. II is a front View of my improved regulator with the plunger in itsinitial or retracted position, the releasing position of the armatureand actuating and actuated parts being indicated by dotted lines.

Fig. III is a front view similar'to' that of Fig. II with the plunger inits extended, position.

Fig. IV is an end elevation looking to the left of Figs. II and III.

Fig- IV i a detail se 0 a lin 1- Specification of Letters Patent.

Patented Feb. 3, 1920.

Serial No. 230,619.

responding to line 4 1 of Figs. IV and V, showing details of theactuating rod locking and controlling means.

Fig. V is an enlarged detail transverse section on a line correspondingto line 5-5 of Fig. II.

Fig. VI is an enlarged detail section on a line corresponding to line6-6 of Figs. IV and V.

Fig. VII is a detail view partially in longitudinal section, showingdetails of the cut-out for the valve connection, the cut-out switch andthe armature retaining means.

Fig. VIII is a detail view showing details of the electrical connection.

Fig. IX is a diagrammatic view of the electrical connections.

Inthe drawing similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.

Referring to'the drawing, I preferably mount the parts upon a base plateor support 1 adapted to be in turn mounted upon a wall or post or othersupport in proper relation to the parts to be controlled.

In Fig. I 2 represents the draft damper of a furnace 3, and 4. the checkdraft ordamper of the furnace smoke pipe 5. These dampers are connectedto the motor by the cables 6 and v7 passing over suitable guide pulleys8. v

I mount a cylinder 9 on the base plate 1, the cylinder being providedwith a plunger 10, shown conventionally by dotted lines in Fig. II. Atits outer end' the cylinder is provided with an, inlet and exhaustconnection 11 controlled by the valve 12, the pipe 13 being connected toa suitable Water supply under pressure, such as a city sysv tem, whilethe pipe 1 1 carries away the exhaust.

The plunger rod 15 reciprocates through a supporting plate 16. Theactuating rod 17 is slidably supported parallel to the plunger rod bymeans of this plate 16 and a bracket 18. The actuating rod is connectedto the lever 19 of the valve by means of the link 20.

ger rod, so that the springs are placed, under The actuating rod isprovided with stops compression toward the end of the stroke of theplunger and power stored to actuate the rod when it is released. Theactuating rod is locked and controlled by the locking slide 2% and thecontrol dog 25, the slide being slidably mounted on the outer side ofthe supporting plate 16, while the control dog is pivotally mounted onthe inner side, the dog being mounted on the pivot 26 and sup ported atits outer edge by the stud 27. A spring 28 is provided for holding thepivoted dog 25 yieldably against the actuating rod 17 and a spring 29 isprovided for actuating the locking slide 24.

The actuating rod. is provided with a notch-like keeper 30 with whichthe locking slide 24 coasts and with spaced notch-like keepers 31 and 32with which the control dog 25 coacts. The keepers 31 and 32 have beveledfaces so that the control dog is 'forced out of engagement therewith bythe actuating springs of the actuating red when the control dog is freeto retract, the control dog being normally held in engaging position bythe plunger rod 15.

To permit the release 01" the control dog the plunger rod 15 is providedwith notchlike recesses 33 and 34 positioned so that the control dog maybe retracted or released when the plunger is at the ends of its stroke,but not intermediate such position.

The locking slide 24 is released by means of the trip lever '35 pivotedat 36 and provided with an adjusting screw 37 engaging the arm 38 on theslide,seo Figs. II and III. The trip lever extends. along the side ofthe plunger rod and is controlled by the armature 39 of theelectromagnet 40, the armature being held in its retracted position bythe spring ll. The details of the electromagnet form no part of thisinvention and they are, therefore, not further described herein.

The armature 39 is provided with a notch 42 adapted to receive the endof the lever 35. The lever has a keeper .46 with an inclined facecoacting with the lug a7 on the plunger rod for holding the plunger inits extended position,see Fig. III. A blade spring 48 1S inounted'on thelever so that it is engaged by the lug 4-7 and placed under stress whenthe plunger is in its retracted position, as shown in Fig. II, so thatwhen the armature is actuated to release the lever the spring throws thelever out to the position indicated by dotted lines in Fig. 11 and tripsor releases the locking member 24:. The return weight 49 is supported bythe cable 50 passed over the guide pulley 51 to a pin 52 on the plungerrod. The pull of the weight on the plunger, owing to the inclined formof the face of thekeeper 4.6

serves to disengage the plunger from the trip lever. The cables 6 and 7are connected tothepin 52.

For convenience in making the electrical connections I mount aninsulated plate 53 on the base plate 1. The plate 53 is provided withbinding posts 5-1 to which the temperature controlled device, shownconventionally at 55, Fig. TX, is connected. The binding post 56 isconnected to the source of current, as the battery 57, Fig. IX.

The binding posts 54lare connected to spring contacts 58 mounted on theplate 53 so as to be engaged by the tappet 23 on the plunger rod 15 whenthe plunger is at the ends of its stroke, the circuit being broken(hiring the stroke of the plunger.

The lead 59 of the electromagnet is controlled by the cutout switch 60,the movable member of which is carried by the actuating rod 17. Thiscut-out switch is opened only while the valve 12 is open to admit waterto the cylinder. The advantage of the cut-out switch is that in theevent of there being a failure of water supply to actuate the plungerthis switch being open prevents the exhausting of the battery or theconsumption of current. The circuit being broken at this time, it isnecessary to provide means for holding the armature in its trip leverreleasing position, and this I accomplish by means of the retaining rod61 adapted to engage a pin 62 on the armature, the rod being secured at63 to the movable member of the cut-out switch and guided to reciprocatethrough the cylinder supports 64. l vhen, however, the plunger isactuated to vits extended position by the hydraulic pressure the valve,through the mechanism described, is closed to cut off the water supplyand this cut-out switch is also closed, the parts being then locked withthe plunger rod in its eX- tended position until the armature isactuated through variations in temperature.

With the parts arranged as I have illus trated and described theoperation of the device is follows:

Assuming the parts to be in the position shown by full lines in Fig. Hand connected to the furnace draft and check as shown in Fig. I, thedraft would be closed and check open, that is, it will be in the reverseposition from that shown in Fig. I. W hen the control device 25 isactuated, as by variation in temperature, it closes the electromagnetcircuit through one or the other of the binding post connections 5%,seethe diagrammatic illustration of Fig. IX-and the armature is actuatedreleasing the trip lever 35. On its releasing movement the trip lever 35releases the locking dog 24. As the dog 25 is then opposite the notch34, it may b moved back into the notch by the actuating rod 17 which isactuated upon the releasing of the dog 2 iby the power stored in theactuating spring 22. This movement of the actuating rod closes theexhaust and opens the inlet. The water acting on the plunger carries itto its outer position shown in Fig. II, which movement places the outerspring 22 under stress. When the limit of the stroke of the plunger isreached, the notch 33 is brought opposite the dog 25 and the actuatingrod spring is then able to return the actuating rod, opening the exhaustand closing the pressure connection, parts then being in position shownin III, in which position the trip lever has engaged the lug 47, and thecircuit having been broken during the passage of the plunger from onecontact 58 to the other, the armature is released and locks the triplever. The parts are held as shown in Fig. III until the armature isagain actuated by the circuit being closed by the control member, thetrip lever is released and the weight returns the plunger to its initialposition as shown in Fig. II. During this return stroke the circuit isbroken and the armature again engages the trip lever for the succeedingactuation.

My improved regulator is entirely automatic, that is, there is no weightor motor to wind. It may be very easily installed and this by unskilledworkmen, as the operative parts are all assembled upon the base plate,which may be mounted on any suitable support. I have illustrated anddescribed my improvements in an embodiment which I consider practical. Ihave not attempted to illustrate or describe various structuralmodifications which I contemplate as I believe the disclosure made willenable those skilled in the art to which my invention relates to embodyor adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire tosecure'by Letters Patent, is: r

1. Ina regulator, the combination of a cylinder provided with inlet andexhaust connections, a valve controlling said connections adapted whenin one position to connect the cylinder with the inlet and when inanother position with the exhaust, a plunger,

a plunger rod, a weight for returning said plunger, an actuating rodconnected to said valve, actuatlng springs on said actuating rod, atappet on said plunger rod adapted to place said springs under stress bythe stroke of the plunger so that when released the actuating rod isactuated thereby, a locking member for said actuating rod, a trip levertherefor having a keeper coacting with a lug on said plunger rod forholding it in its extended position, said keeper having an 7 inclinedface so that when said lever is released the actuating weightdlsconnects the ,lug and keeper, an electromagnet comprising an armatureconstituting a lock for said lever said lever being provided with a l Ihich is put under stress by the rethe plunger so that thelevcr actuatedwhen released by the armature, a spring actuated control dog for saidactuating rod, said rod having spaced beveled keepers coacting with saiddog, said plunger rod constituting means for holding said dog inengagement and permitting the release of said dog only at the ends ofthe stroke of the plunger whereby the actuating rod is held with itsactuating springs under compression until the completion of the strokeof the plunger, and electrical connections for said electromagnetcomprising a contact member on the plunger rod and a pair of coactingspring contact members positioned to be engaged thereby at the ends ofthe stroke of the plunger whereby the circuit is broken during thestroke of the plunger, a cut-out switch operatively connected to saidactuating rod to be opened when the plunger is inv its retractedposition, and an armature retaining member actuated by said actuatingrod to retain the armature in its closed position when the plunger is inits retracted position.

2. In a regulator, the combination of a cylinder provided with inlet andexhaust con-- nections, a valve controlling said connections adaptedwhen in one position to connect the cylinder with the inlet and when inan other position with the exhaust, a plunger, a plunger rod, a weightfor returning said plunger, an actuating rodconnected to said valve,actuating springs on said actuating rod, a tappet on said plunger rodadapted to place said springs under stress by the stroke of the plungerso that when released the actuating rod is actuated thereby,'a lockingmember for said actuating rod, a trip lever therefor having a keepercoacting with a lug on said plunger rod for holding it in its extendedposition, said keeper having an inclined face so that when said lever isre leased the actuating weight disconnects the lug and keeper, anelectromagnet comprising an armature constituting a lock for said lever,said lever being provided with a spring which is put under stress by thereturn of the plunger so that the' lever is actuated when released bythe armature, a spring actuated control dog for said actuating rod, saidrod having spaced beveled keepers coacting with said dog, said plungerrod constituting means for holding said dog in engagement and permittingthe release of said dog only at the ends of the stroke of the plungerwhereby the actuating rod is held with its actuating springs undercomraining member actuated by said actuating rod to retain the armaturein its closed posit tion when the plunger is in its retracted position.

3. In a regulator, the combination of a cylinder provided with inlet andexhaust connections, a valve controlling said connections adapted whenin one position to connect the cylinder with the inlet and when inanother position with t exhaust, a plunger, a plunger rod, a weight forreturning said plunger, an actuating rod connected to said valve,actuating, springs on said actuating rod, a tappet on said plunger rodadapted to place said springs under stress by the stroke of the plungerso that when released the actuating rod is actuated thereby, a lockingmember for said actuating rod, a trip lever therefor having a keepercoacting with a lug on said plunger rod for holding it in extendedposition, said keeper having an inclined face so that when said lever isreleased the actuating weight disconnects the lug and keeper, anelectro-magnet comprising an armature constituting a lock for saidlever, said lever being provided with a spring which is put under stressby the return of the plunger so that the lever is actuated when releasedby the armature, and a spring actuated control dog for said actuatingrod, said rod having spaced beveled keepers coacting with said dog, saidplunger rod constituting means for holding said dog in engagement andpermitting the release or said dog only at the ends of the stroke oi theplunger whereby the actuating rod is held with its actuating springsunder compression until the completion of the stroke of the plunger.

4. In a regulator,,the combination of a cylinder provided with inlet andexhaust connections, a valve controlling said connections adapted whenin one position to connect the cylinder with the inlet and when inanother position with the exhaust, a plunger, a plunger rod, a weightfor returning said plunger, an actuating rod connected to said valve,actuating springs on said actuating rod, a tappet on said plunger rodadapted to place said springs under stress by the stroke of the plungerso that when released the actuating rod is actuated thereby, a lockingmember for said actuating rod, a trip lever therefor having a keepercoacting with a lug on said plunger rod for holding it in its extendedposition, said keeper having an inclined face so that when said lever isreleased the actuating weight disconnects the lug and keeper, anelectromagnet comprising an armature constitntving a lock for saidlever, and a spring actuated control dog for said actuating rod, saldrod havlng spaced beveled keepers coacting with said dog, sald plungerrod constitutin means for holdin said do in enr: 1 g b gagement andpermitting the release of sald dog only at the ends of the stroke of theplunger whereby the actuating rod is held with its actuating springsunder compression until the completion of the stroke of the plunger.

5. In a regulator, the combination of a cylinder provided with inlet andexhaust connections, a valve controlling said connections adapted whenin one position to connect the cylinder with the inlet and when inanother position with the exhaust, a plunger, a plunger rod, a weightfor returning said plunger, an actuating rod, actuating springs on saidactuating rod, a tappet on said plunger rod adapted to place saidsprings under stress by the stroke of the plunger so that when releasedthe actuating rod is actuated thereby, a locking means for saidactuating rod comprising a trip lever, said lever constituting means forholding said plunger in its extended position, an electromagnetcomprising an armature operatively associated with said lever, means forholding said actuating rod with its springs under compression until thecompletion of the stroke of the plunger, and electrical connections forsaid electromagnet comprising a contact member on the plunger rod and apair of coacting spring contact members positioned to be engaged therebyat the ends of the stroke of the plunger whereby the circuit is brokenduring the stroke of the plunger, a cut-out switch operatively connectedto said actuating rod to be opened when the plunger is in its retractedposition, and an armature retaining. member actuated by said actuatingrod to retain the armature in its closed position when the plunger is inits retracted position.

6. In a regulator, the combination of a cylinder provided with inlet andexhaust connections, a valve controlling said connections adapted whenin one position to connect the cylinder with the inlet and when inanother position with the exhaust, a plunger. a plunger rod,- a weightforreturning said plunger, an actuating rod, actuating springs on saidactuating rod, a tappet on said plunger rod adapted to place saidsprings under stress by the stroke of the plunger so that when releasedthe actuating rod is actuated thereby, a locking means for saidactuating rod comprising a trip lever, said lever constituting means forholding said plunger in its extended position, an electromagnetcomprising an armature operatively associated with said lever, means forholding said actuating rod with its springs under compression until thecompletion of the stroke of the plunger, and electrical connections forsaid electromagnet comprising a cut-out switch operatively connected tosaid actuating rod to be opened when the plunger is in its retractetion, and an armature retaining tuated by said actuating rod to retainthe armature in its closed position when the plunger is in its retractedposition.

7. In a regulator, the combination of a cylinder provided with inletandexhaust connections, a valve controlling said connections adaptedwhen in one position to connect the cylinder with the inlet and when inanother position ger, a plunger rod, a weight for returning saidplunger, an actuating rod, actuating springs on said actuating rod, atappet on said plunger rod adapted to place said springs under stress bythe stroke of the plunger so that when released the actuating rod isactuated thereby, a locking means for said actuating rod comprising atrip lever, said lever constituting means for holding said plunger inits extended position, an electromagnet comprising an armatureoperatively associated with said lever, and means for holding saidactuating rod with its springs under compression until the completion ofthe stroke of the plunger.

8. In a regulator, the combination of a cylinder provided with inlet andexhaust connections, means for controlling said connections comprisingan actuating rod, a plunger, a plunger rod, a weight for returning saidplunger, actuating springs for sa d actuating rod, means for placingsald springs under stress by the stroke of the plunger so that whenreleased the actuating rod is actuated by the springs, a locking memberfor said actuating rod, atrip lever therefor having a keeper coactingwith a lug on said plunger rod for holding it in its extended position,said keeper having an inclined face so that when said lever is releasedthe actuating weight disconnects the lug and keeper, armatureconstituting a lock for said lever, said lever being provided -with aspring which is put under stress by the return of the plunger so thatthe lever is actuated when released by the armature, a spring actuatedcontrol dog for said actuating rod, said rod having spaced beveledkeepers coacting with said dog, said plunger rod con"- stituting meansfor holding said dog in engagement and permitting the release of saiddog only at the ends of the stroke of the plunger whereby the actuatingrod is held with its actuating springs under compression until thecompletion of the stroke of the plunger, and electrical connections forsaid electromagnet comprising a contact member on the plunger rod and apair of coacting spring contact members positioned to be engaged therebyat the ends of the stroke of the plunger whereby the circuit is brokenduring the stroke of the plunger, a cut-out switch operatively connectedto said actuating rod to be opened when the plunger is in its retractedposition, and an armature rewith the exhaust, a plunan electromagnetcomprising an 9. In a regulator, the combination of a cylinder providedwith inlet and exhaust Y connections, means for controlling saidconnections comprising an actuating rod, a plunger, a plunger rod, aweight for returning said plunger, actuating springs for said actuatingrod, means for placing said springs under stress by the stroke of theplunger so that when released the actuating rod is actuated by thesprings, a locking member for said actuating rod, a tri lever thereforhaving a keeper coacting wit a lug on said plunger rod for holding it inits extended position, said keeper having an inclined face so that whensaid lever is released the actuating weight disconnects the lug andkeeper, an electromagnet comprising an armature constituting a lock forsaid lever, said lever being provided with a spring which is put understress by the ,return of the plunger so that the lever is actuated whenreleased by the armature, a spring actuated control dog for-saidactuating rod, said rod having spaced beveled keepers coacting with saiddog, said plunger rod constituting means for holding said dog inengagement and permitting the release of said dog only at the ends ofthe stroke of the plunger whereby the actuating rod is held with itsactuating springs under COIl1- pression until the completion of thestroke of the plunger, and electrical connections for said electromagnetcomprising a cut-out switch operatively connected to said actuating rodto be opened when the plunger is in its retracted position, and anarmature rerod to retain the armature in its closed position when theplunger is in its retracted position.

10. In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating rod, a plunger, a plunger rod, a weight forreturning said plunger, actuating springs for said actuating rod, meansfor placing said springs under stress by the stroke of the plunger sothat when released the actuating rod is actuated by the springs, alocking member for said actuating rod, a trip lever therefor having akeeper coacting with a lug on said plunger rod for holding it in itsextended position, said keeper having aninclined face so that when saidlever is released the actuating weight disconnects the lug and keeper,an electromagnet comprising an armature constituting a lock for saidlever,- said lever being provided with a spring which is put understress by the return of the plunger so that the lever is actu- 'tainingmember actuated by said actuating ated when released by the armature,and a spring actuated control dog for said actuating rod, said rodhaving spaced beveled keepers coacting'with said dog, said plunger rodconstituting means for holding said dog in engagement and permitting therelease of said dog only at the ends of the stroke of the plungerwhereby the actuating rod isheld with its actuating springs undercompression until the completion of the stroke of the plunger.

11. In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a plunger rod, a Weight forreturning said plunger, actuating springs for said actuating member,means for placing said springs under stress by the stroke of the plungerso that when released the actuating member is actuated by the springs, alocking means for said actuating member comprising a trip lever, anelectromagnet comprising an armature operatively associated with saidlever, means for holding said actuating member with its springs undercompression until the completion of the stroke of the plunger includingthe plunger rod, and electrical connections for said electromagnetcomprising a contact member on the plunger rod and a pair of coactingspring contact members positioned to be engaged thereby at the ends ofthe stroke of the plunger whereby the circuit is broken during thestroke of the plunger, a cut-out switch operatively connected to saidactuating rod to be opened when the plunger is in its retracted positionand an armature retaining member actuated by said actuating rod toretain the armature in its closed position when the plunger is in itsretracted position.

12. In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a plunger rod, a weight forreturning said plunger, actuating springs for said actuating member,means for placing said springs under stress by the stroke of the plungerso that when released the actuating member is actuated by the springs, a

locking means for said actuating member comprising a trip lever, anelectromagnet comprising an armature operatively associated with saidlever, means for holding said actuating member with its springs undercompression until the completion of the stroke of the plunger includingthe plunger rod, and electrical connections for said electromagnetcomprising a cut-out switch operatively connected to said actuating rodto be opened when the plunger is in its retracted position, and anarmature retaining member actuated by said actuating rod to sition whenthe retain the armature in its closed position when the plunger is inits retracted position.

13. In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a plunger rod, a weight forreturning said plunger, actuating springs for said actuating member,means for placing said springs under stress by the stroke of the plungerso that when released the actuating member is actuated by the springs, alocking means for said actuating member comprising a trip lever, anelectromagnet comprising an armature operatively associated with saidlever, and means for holding said actuating member with its springsunder compression until the completion of the stroke of the plungerincluding the plunger rod.

14:. In a regulator, the combination of a cylinder provideu with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a plunger rod, a weight forreturning said plunger, actuating springs for said actuating member,means for placing said springs under stress by the stroke of the plungerso that when released the actuating member is actuated by the springs, alocking means for said actuating member comprising 'a trip lever, saidlever constituting means for holding said plunger in its extendedposition, an electromagnet comprising an armature operatively associatedwith said lever, and means for holding said actuating member with itssprings under compression until the completion of the stroke of theplunger including the plunger rod.

15; In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a weight for returning saidplunger, actuating springs for said actuating member, means for placingsaid springs under stress by the stroke of the plunger so that whenreleased the actuating member is actuated by the springs, means forcontrolling said actuating member comprising an electromagnet, means forholding said actu ating rod with its springs under compres sion untilthe completion of the stroke of the plunger, and electrical connectionsfor said electromagnet comprising a cut-out switch operatively connectedto said actuating member to be opened when the plunger is in itsretracted position, and an armature retaining member actuated by saidactuating mem- 'ber to retain the armature in its closed poplunger is inits retracted position.

16. In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a weight for returning saidplunger, actuating springs for said actuating member, means for placingsaid springs under stress by the stroke of the plunger so that whenreleased the actuating member is actuated by the springs, means forlocking said actuating member at the end of its stroke, automatic meansfor releasing said locking means, and means for holding said actuatingrod with its springs under compression until the completion of thestroke of the plunger.

17 In a regulator, the combination of a cylinder provided with inlet andexhaust connections, means for controlling said connections comprisingan actuating member, a plunger, a weight for returning said plunger,actuating springs for said actuating member, means for placing saidsprings under stress by the stroke of the plunger so that when releasedthe actuating member is actuated by the springs, means for controllingsaid actuating member comprising an electromagnet, and means for holdingsaid actuating member with its springs under compression until thecompletion of the stroke of the plunger.

18. In a regulator, the combination of a cylinder provided with inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a weight for returning saidplunger, actuating springs for said actuating, member, means for placingsaid springs under stress by the stroke of the plunger so that Whenreleased the actuating member is actuated by the springs, and means forcontrolling said actuating member comprising an electromagnet.

19. In a regulator, the combination of a cylinder provided With inletand exhaust connections, means for controlling said connectionscomprising an actuating member, a plunger, a weight for returning saidplunger, actuating springs for said actuating member, means for lockingsaid actuating member at the end of its stroke, and means for placingsaid springs under stress by the stroke of the plunger so that whenreleased the actuating member is actuated by the springs.

In Witness whereof, I have hereunto set my hand and seal in the presenceof two Witnesses.

ROBERT J. SEATOR. 1 8.

Witnesses:

LU A. DUDLEY, ,Rox M. LUDLUM.

